| 1 | /* $Id: initterm-r0drv-solaris.c 47304 2013-07-22 14:23:00Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Initialization & Termination, Ring-0 Driver, Solaris.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2012 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*******************************************************************************
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| 29 | * Header Files *
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| 30 | *******************************************************************************/
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| 31 | #include "the-solaris-kernel.h"
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| 32 | #include "internal/iprt.h"
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| 33 |
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| 34 | #include <iprt/assert.h>
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| 35 | #include <iprt/err.h>
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| 36 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
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| 37 | # include <iprt/asm-amd64-x86.h>
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| 38 | #endif
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| 39 | #include "internal/initterm.h"
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| 40 |
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| 41 |
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| 42 | /*******************************************************************************
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| 43 | * Global Variables *
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| 44 | *******************************************************************************/
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| 45 | /** Kernel debug info handle. */
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| 46 | RTDBGKRNLINFO g_hKrnlDbgInfo;
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| 47 | /** Indicates that the spl routines (and therefore a bunch of other ones too)
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| 48 | * will set EFLAGS::IF and break code that disables interrupts. */
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| 49 | bool g_frtSolSplSetsEIF = false;
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| 50 | /** timeout_generic address. */
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| 51 | PFNSOL_timeout_generic g_pfnrtR0Sol_timeout_generic = NULL;
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| 52 | /** untimeout_generic address. */
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| 53 | PFNSOL_untimeout_generic g_pfnrtR0Sol_untimeout_generic = NULL;
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| 54 | /** cyclic_reprogram address. */
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| 55 | PFNSOL_cyclic_reprogram g_pfnrtR0Sol_cyclic_reprogram = NULL;
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| 56 | /** page_noreloc_supported address. */
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| 57 | PFNSOL_page_noreloc_supported g_pfnrtR0Sol_page_noreloc_supported = NULL;
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| 58 | /** Whether to use the kernel page freelist. */
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| 59 | bool g_frtSolUseKflt = false;
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| 60 | /** Whether we've completed R0 initialization. */
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| 61 | bool g_frtSolInitDone = false;
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| 62 | /** Whether to use old-style xc_call interface. */
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| 63 | bool g_frtSolOldIPI = false;
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| 64 | /** Whether to use old-style xc_call interface using one ulong_t as the CPU set
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| 65 | * representation. */
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| 66 | bool g_frtSolOldIPIUlong = false;
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| 67 | /** The xc_call callout table structure. */
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| 68 | RTR0FNSOLXCCALL g_rtSolXcCall;
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| 69 | /** Whether to use the old-style installctx()/removectx() routines. */
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| 70 | bool g_frtSolOldThreadCtx = false;
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| 71 | /** The thread-context hooks callout table structure. */
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| 72 | RTR0FNSOLTHREADCTX g_rtSolThreadCtx;
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| 73 | /** Thread preemption offset. */
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| 74 | size_t g_offrtSolThreadPreempt;
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| 75 | /** Host scheduler preemption offset. */
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| 76 | size_t g_offrtSolCpuPreempt;
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| 77 | /** Host scheduler force preemption offset. */
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| 78 | size_t g_offrtSolCpuForceKernelPreempt;
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| 79 | /* Resolve using dl_lookup (remove if no longer relevant for supported S10 versions) */
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| 80 | extern void contig_free(void *addr, size_t size);
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| 81 | #pragma weak contig_free
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| 82 | /** contig_free address. */
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| 83 | PFNSOL_contig_free g_pfnrtR0Sol_contig_free = contig_free;
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| 84 |
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| 85 | DECLHIDDEN(int) rtR0InitNative(void)
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| 86 | {
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| 87 | /*
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| 88 | * IPRT has not yet been initialized at this point, so use Solaris' native cmn_err() for logging.
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| 89 | */
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| 90 | int rc = RTR0DbgKrnlInfoOpen(&g_hKrnlDbgInfo, 0 /* fFlags */);
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| 91 | if (RT_SUCCESS(rc))
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| 92 | {
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| 93 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
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| 94 | /*
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| 95 | * Detect whether spl*() is preserving the interrupt flag or not.
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| 96 | * This is a problem on S10.
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| 97 | */
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| 98 | RTCCUINTREG uOldFlags = ASMIntDisableFlags();
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| 99 | int iOld = splr(DISP_LEVEL);
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| 100 | if (ASMIntAreEnabled())
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| 101 | g_frtSolSplSetsEIF = true;
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| 102 | splx(iOld);
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| 103 | if (ASMIntAreEnabled())
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| 104 | g_frtSolSplSetsEIF = true;
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| 105 | ASMSetFlags(uOldFlags);
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| 106 | #else
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| 107 | /* PORTME: See if the amd64/x86 problem applies to this architecture. */
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| 108 | #endif
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| 109 |
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| 110 | /*
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| 111 | * Mandatory: Preemption offsets.
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| 112 | */
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| 113 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, "cpu_t", "cpu_runrun", &g_offrtSolCpuPreempt);
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| 114 | if (RT_FAILURE(rc))
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| 115 | {
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| 116 | cmn_err(CE_NOTE, "Failed to find cpu_t::cpu_runrun!\n");
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| 117 | goto errorbail;
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| 118 | }
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| 119 |
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| 120 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, "cpu_t", "cpu_kprunrun", &g_offrtSolCpuForceKernelPreempt);
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| 121 | if (RT_FAILURE(rc))
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| 122 | {
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| 123 | cmn_err(CE_NOTE, "Failed to find cpu_t::cpu_kprunrun!\n");
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| 124 | goto errorbail;
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| 125 | }
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| 126 |
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| 127 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, "kthread_t", "t_preempt", &g_offrtSolThreadPreempt);
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| 128 | if (RT_FAILURE(rc))
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| 129 | {
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| 130 | cmn_err(CE_NOTE, "Failed to find kthread_t::t_preempt!\n");
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| 131 | goto errorbail;
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| 132 | }
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| 133 | cmn_err(CE_CONT, "!cpu_t::cpu_runrun @ 0x%lx (%ld)\n", g_offrtSolCpuPreempt, g_offrtSolCpuPreempt);
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| 134 | cmn_err(CE_CONT, "!cpu_t::cpu_kprunrun @ 0x%lx (%ld)\n", g_offrtSolCpuForceKernelPreempt, g_offrtSolCpuForceKernelPreempt);
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| 135 | cmn_err(CE_CONT, "!kthread_t::t_preempt @ 0x%lx (%ld)\n", g_offrtSolThreadPreempt, g_offrtSolThreadPreempt);
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| 136 |
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| 137 | /*
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| 138 | * Mandatory: CPU cross call infrastructure. Refer the-solaris-kernel.h for details.
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| 139 | */
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| 140 | rc = RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "xc_init_cpu", NULL /* ppvSymbol */);
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| 141 | if (RT_SUCCESS(rc))
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| 142 | {
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| 143 | if (ncpus > IPRT_SOL_NCPUS)
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| 144 | {
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| 145 | cmn_err(CE_NOTE, "rtR0InitNative: CPU count mismatch! ncpus=%d IPRT_SOL_NCPUS=%d\n", ncpus, IPRT_SOL_NCPUS);
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| 146 | rc = VERR_NOT_SUPPORTED;
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| 147 | goto errorbail;
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| 148 | }
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| 149 | g_rtSolXcCall.u.pfnSol_xc_call = (void *)xc_call;
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| 150 | }
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| 151 | else
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| 152 | {
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| 153 | g_frtSolOldIPI = true;
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| 154 | g_rtSolXcCall.u.pfnSol_xc_call_old = (void *)xc_call;
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| 155 | if (max_cpuid + 1 == sizeof(ulong_t) * 8)
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| 156 | {
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| 157 | g_frtSolOldIPIUlong = true;
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| 158 | g_rtSolXcCall.u.pfnSol_xc_call_old_ulong = (void *)xc_call;
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| 159 | }
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| 160 | else if (max_cpuid + 1 != IPRT_SOL_NCPUS)
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| 161 | {
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| 162 | cmn_err(CE_NOTE, "rtR0InitNative: cpuset_t size mismatch! max_cpuid=%d IPRT_SOL_NCPUS=%d\n", max_cpuid,
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| 163 | IPRT_SOL_NCPUS);
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| 164 | rc = VERR_NOT_SUPPORTED;
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| 165 | goto errorbail;
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| 166 | }
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| 167 | }
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| 168 |
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| 169 | /*
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| 170 | * Mandatory: Thread-context hooks.
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| 171 | */
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| 172 | rc = RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "exitctx", NULL /* ppvSymbol */);
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| 173 | if (RT_SUCCESS(rc))
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| 174 | {
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| 175 | g_rtSolThreadCtx.Install.pfnSol_installctx = (void *)installctx;
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| 176 | g_rtSolThreadCtx.Remove.pfnSol_removectx = (void *)removectx;
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| 177 | }
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| 178 | else
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| 179 | {
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| 180 | g_frtSolOldThreadCtx = true;
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| 181 | g_rtSolThreadCtx.Install.pfnSol_installctx_old = (void *)installctx;
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| 182 | g_rtSolThreadCtx.Remove.pfnSol_removectx_old = (void *)removectx;
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| 183 | }
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| 184 |
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| 185 | /*
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| 186 | * Optional: Timeout hooks.
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| 187 | */
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| 188 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "timeout_generic",
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| 189 | (void **)&g_pfnrtR0Sol_timeout_generic);
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| 190 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "untimeout_generic",
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| 191 | (void **)&g_pfnrtR0Sol_untimeout_generic);
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| 192 | if ((g_pfnrtR0Sol_timeout_generic == NULL) != (g_pfnrtR0Sol_untimeout_generic == NULL))
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| 193 | {
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| 194 | static const char *s_apszFn[2] = { "timeout_generic", "untimeout_generic" };
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| 195 | bool iMissingFn = g_pfnrtR0Sol_timeout_generic == NULL;
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| 196 | cmn_err(CE_NOTE, "rtR0InitNative: Weird! Found %s but not %s!\n", s_apszFn[!iMissingFn], s_apszFn[iMissingFn]);
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| 197 | g_pfnrtR0Sol_timeout_generic = NULL;
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| 198 | g_pfnrtR0Sol_untimeout_generic = NULL;
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| 199 | }
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| 200 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "cyclic_reprogram",
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| 201 | (void **)&g_pfnrtR0Sol_cyclic_reprogram);
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| 202 |
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| 203 | /*
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| 204 | * Optional: Querying page no-relocation support.
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| 205 | */
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| 206 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /*pszModule */, "page_noreloc_supported",
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| 207 | (void **)&g_pfnrtR0Sol_page_noreloc_supported);
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| 208 |
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| 209 | /*
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| 210 | * Weak binding failures: contig_free
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| 211 | */
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| 212 | if (g_pfnrtR0Sol_contig_free == NULL)
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| 213 | {
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| 214 | rc = RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "contig_free", (void **)&g_pfnrtR0Sol_contig_free);
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| 215 | if (RT_FAILURE(rc))
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| 216 | {
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| 217 | cmn_err(CE_NOTE, "rtR0InitNative: failed to find contig_free!\n");
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| 218 | goto errorbail;
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| 219 | }
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| 220 | }
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| 221 |
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| 222 | g_frtSolInitDone = true;
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| 223 | return VINF_SUCCESS;
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| 224 | }
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| 225 | else
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| 226 | {
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| 227 | cmn_err(CE_NOTE, "RTR0DbgKrnlInfoOpen failed. rc=%d\n", rc);
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| 228 | return rc;
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| 229 | }
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| 230 |
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| 231 | errorbail:
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| 232 | RTR0DbgKrnlInfoRelease(g_hKrnlDbgInfo);
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| 233 | return rc;
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| 234 | }
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| 235 |
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| 236 |
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| 237 | DECLHIDDEN(void) rtR0TermNative(void)
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| 238 | {
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| 239 | RTR0DbgKrnlInfoRelease(g_hKrnlDbgInfo);
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| 240 | g_frtSolInitDone = false;
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| 241 | }
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| 242 |
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